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Safety Testing Technology Of Lithium Battery

Lithium-ion (li+) batteries are more vulnerable than other chemical types, with very little tolerance for irregularities. Therefore, lithium battery charging circuit is more complex, requiring high-precision current, voltage settings. If these precision requirements are not met, the charger may not fully fill the battery, thereby reducing battery life, or affecting battery performance.Lithium Battery

Given these requirements for li+ battery chargers, it is important to fully test the design of the charger and to perform segmented testing throughout the scope of the work. However, the use of conventional load (i.e. li+ batteries) to test li+ battery chargers can be time-consuming and difficult to implement in lab and production environments. In order to simplify the testing process, this paper gives a battery simulation circuit, which can speed up the testing speed and realize the test of lithium ion battery charger without actual battery.Lithium Battery Given these requirements for li+ battery chargers, it is important to fully test the design of the charger and to perform segmented testing throughout the scope of the work. However, the use of conventional load (i.e. li+ batteries) to test li+ battery chargers can be time-consuming and difficult to implement in lab and production environments. In order to simplify the testing process, this paper gives a battery simulation circuit, which can speed up the testing speed and realize the test of lithium ion battery charger without actual battery.Lithium Battery The critical tolerance of the transition point of CC to CV phase is ±40mv. The reason for such a strict tolerance is that if the CV is too low, the battery will not be fully filled and the CV too high will shorten the battery life. The termination of the charging process means that the battery is fully charged and the charger must be disconnected or closed. In the CV phase, the charge is terminated when the charging current is detected to a certain percentage of the fast charging current or the maximum charge currents (usually 10%).Lithium Battery


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